WWE’s Superstar “Triple H” joined Floyd Mayweather, Jr. during his weigh in for is bout with Jaun Manuel Marquez Saturday night.

Popularity: 15%

Lead Singer from PussyCat Dolls Nicole Scherziner decided to mix business with pleasure this weekend when she got up onstage midway through the show to join Matt Goss.  Nicole later gave one more performance of her own later that night when she headed over to LAX nightclub. (Photo: Denise Truscello/WireImage)

Popularity: 17%

Vince Neil performed to celebrate the opening of Vince Neil Ink with partner Danny Koker of Counts Kustoms at the Rio in Las Vegas this weekend.  (Photo by Dave Proctor / www.daplv.com ).

Popularity: 15%

Bow Wow performed at the PURE Nightclub at Caesars Palace in Las Vegas, Sunday night. Vegas is really heating up, with so many celebrity performances and parties.

Popularity: 10%

Mariah Carey put on an amazing show last night at The Peral inside the Palms Casion Resort.  Mariah Carey is the most successful female artist in the music industry and last nights performance showed it as she performed songs from her lastest album, Memoirs of an Imperfect Angel including her hit single “Obsessed”.

Popularity: 11%

Matt Goss debuted his new show at The Gossy Room at The Palms Resort in Las Vegas, Nevada last night. Seems like Vegas is still heating up, even in the summer. We wonder how this London based singer liked hot sin city.

Popularity: 16%

Stacy Keibler hosted the “SUPERDRAFT VIP” party for the fantasy football superdraft this weekend at JET nightclub at the mirage.  The Party continued On Saturday where SUPERDRAFT participants did their fantasy football picks in a customized rooms set up like the NFL at the Hard Rock Hotel & Casino.  Hosted by Molly Sims and a performance by Flo Rida at PURE nightclub at Caesars Palace later that night.  (Pictured above: Molly Sims – Photo credit: Sean Smith/WireImage)

Popularity: 12%